1. 8 Data Collection Step 1 Define the problem
Step 2 Determine the scope of work
Step 3 Gather, record, verify and analyze data
Uniform Appraisal Dataset (UAD) applies to conventional mortgage loans sold to Fannie Mae and Freddie Mac

2. Data Bank Data source list Kinds of data needed
National and regional trends
Economic base
Local area and neighborhood
Site and improvements
Assemblage and plottage

3. Data Forms Neighborhood data Stages of life cycle—GEDR Growth
Equilibrium
Decline
Revitalization
Proximity to hazards and nuisances
Site data—site visit requires permission of the property owner

4. Data Forms Building data Exterior features Interior features
Depreciation
Physical deterioration
Functional obsolescence
External obsolescence
Multiunit buildings

5. Data for Sales Comparison Approach
Recent sales
Similar features
Financing terms
Arm’s-length transactions
Sources of data
Appraiser’s own records
Official records of deeds
Real estate assessor’s office
Records of sales